87948217 ÷ 780 
The aim is to understand the frequency of 780 in 87948217.

Going ahead to step 1:
When dividing 8 by 780, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 780

Step 2:
If we divide 87 by 780, we get 0 and a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Fetch the next digit (9) from the dividend, attach it to 87 and continue: 879 / 780

Advancing to step 3:
879 divided by 780 is 1 with a remainder of 99.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 780 from 879 and we're left with 99.
Append the next digit (4) from the dividend to 99 and continue with: 994 / 780

Let's proceed to step 4:
780 goes into 994 1 times with a remainder of 214.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 214 after subtracting 780 from 994.
Take the next digit (8) from the dividend and append it to 214, then repeat: 2148 / 780

On to step 5:
780 goes into 2148 2 times with a remainder of 588.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
Deduct 1560 from 2148 and we're left with 588.
Bring next digit (2) of the dividend behind the 588 and repeat the process: 5882 / 780

Let's proceed to step 6:
The number 780 fits into 5882 7 times, leaving a remainder of 422.
Put 7 as the next digit of the answer. 
Result so far: 1127.0
If we take 5460 away from 5882, we end up with 422.
Bring next digit (1) of the dividend behind the 422 and repeat the process: 4221 / 780

On to step 7:
If we divide 4221 by 780, we get 5 and a remainder of 321.
The number 5 becomes the next digit in our result. 
Result so far: 11275.0
Subtracting 3900 from 4221 leaves us with 321.
Take the next digit (7) from the dividend and append it to 321, then repeat: 3217 / 780

Let's proceed to step 8:
When dividing 3217 by 780, we get 4 with a remainder of 97.
Put 4 as the next digit of the answer. 
Result so far: 112754.0
Subtract 3120 from 3217 to get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Moving on to step 9:
If we divide 970 by 780, we get 1 and a remainder of 190.
Record the quotient 1 as the next digit in the result. 
Result so far: 112754.1
If we subtract 780 from 970, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 10:
1900 divided by 780 is 2 with a remainder of 340.
Record the quotient 2 as the next digit in the result. 
Result so far: 112754.12
Subtract 1560 from 1900 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Let's proceed to step 11:
780 can be fit into 3400 4 times, resulting in a remainder of 280.
Write down 4 as next digit of the result. 
Result so far: 112754.124
Deduct 3120 from 3400 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 12:
780 goes into 2800 3 times with a remainder of 460.
The next digit of our result is 3. 
Result so far: 112754.1243
The remainder is 460 after subtracting 2340 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 13:
The number 780 fits into 4600 5 times, leaving a remainder of 700.
The next digit of our result is 5. 
Result so far: 112754.12435
The remainder is 700 after subtracting 3900 from 4600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Let's proceed to step 14:
780 goes into 7000 8 times with a remainder of 760.
Write down 8 as next digit of the result. 
Result so far: 112754.124358
Subtract 6240 from 7000 to get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Going ahead to step 15:
If we divide 7600 by 780, we get 9 and a remainder of 580.
Record the quotient 9 as the next digit in the result. 
Result so far: 112754.1243589
Subtract 7020 from 7600 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

On to step 16:
780 can be fit into 5800 7 times, resulting in a remainder of 340.
Use 7 as the next digit of our solution. 
Result so far: 112754.12435897
The remainder is 340 after subtracting 5460 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

The quotient of the division is 112754.12435897, and the remainder is 3.4e-07.